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Old 08-22-2013, 09:37 AM
FoMoCo96 FoMoCo96 is offline
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Join Date: May 2013
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Exclamation Straight Springs vs. Conical Springs

I have a 1999 Ranger FFV built in Semptember of 1998.

I was told by the machine shop that my heads (F6DE GA) cannot be reused or machined (outside of workable wear range) for cheaper than remanufactured heads.

I bought a pair of heads for National Cylinder Head that came in yesterday, but they have casting #F6DE GC indicative of smaller (7.0 MM) valves with conical valve springs. My original heads (F6DE GA) has the larger (8.0MM) valves and straight valve springs.

My question:

Will the conical valve spring head work on my (9/98) Ranger 3.0 even though it first appeared in the Ranger around 7/27/99? Can I still use the same parts (rockers, dowels, etc)? The reman company says they send these to people all the time and haven't heard of any problems.
1999 Ford Ranger 3.0L Vulcan Flex Fuel XLT 4R44E Automatic Transmission

Last edited by FoMoCo96; 08-22-2013 at 09:40 AM. Reason: Typo/needed more info
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1999, 3.0, ffv, vulcan, xlt

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